Thoracic cavity puncture tube capable of monitoring chest pressure in real time

Abstract

The thoracocentesis tube capable of monitoring the chest pressure in real time comprises a main body assembly, and the main body assembly comprises a chest drainage tube, a medicine conveying hole, a medicine conveying tube, a three-way connector and an anti-blocking hole. The medicine conveying tube, the chest pressure detection connector, the medicine feeding connector and the like are integrated on the chest drainage tube, so that medical staff can monitor the pressure and the blood oxygen concentration in the chest in real time while conducting closed drainage treatment on the chest, medicine is directly and accurately fed into the chest through the medicine feeding connector when necessary, extra operation and equipment are not needed, and the operation is convenient. Convenience and efficiency of clinical treatment are greatly improved, pain and infection risks of patients are reduced, and rapid recovery of the patients is facilitated; the pressure change and the blood oxygen concentration change in the thoracic cavity are sensed in real time through the detection equipment, continuous and dynamic monitoring of the pressure and the blood oxygen concentration in the thoracic cavity in the whole drainage process is achieved, instant and accurate pressure data are provided for medical staff, and the medical staff can find the abnormal change of the pressure in the thoracic cavity in time.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a thoracentesis tube capable of monitoring chest pressure in real time. Background Art

[0002] Closed chest drainage occupies a pivotal position in the field of modern clinical medicine and is an indispensable key means for treating a variety of chest diseases. There are many kinds of chest diseases, among which hemothorax is caused by chest trauma or other reasons that cause ruptured blood vessels in the chest cavity and bleeding, and blood accumulates in the chest cavity; pneumothorax is caused by abnormal lung tissue that causes gas to enter the chest cavity, destroying the normal pressure balance in the chest cavity; empyema is mostly caused by infection, and purulent secretions accumulate in the chest cavity; closed chest drainage is often required after thoracotomy to promote postoperative recovery. The main principle is to place one end of the drainage tube into the chest cavity and connect the other end to a lower collection device (such as a water seal bottle or a drainage bag), so as to discharge the gas in the chest cavity or collect the fluid in the chest cavity, prompting the lung tissue to reopen and restore function.

[0003] At present, the monitoring of intrathoracic pressure in clinical practice mostly relies on separate pressure monitoring equipment, and it is impossible to perform real-time, continuous and accurate monitoring during the drainage process. Medical staff need to frequently use additional equipment to measure the patient's intrathoracic pressure, which is cumbersome and inefficient, and it is difficult to timely and accurately grasp the dynamic changes of the patient's intrathoracic pressure. At the same time, when administering drugs into the chest cavity, it is generally necessary to use other routes, such as puncture injection, which increases the patient's pain and infection risk, and is not conducive to the timeliness and accuracy of treatment. Therefore, a thoracentesis tube that can monitor chest pressure in real time is proposed. Summary of the invention

[0004] In view of this, the present invention hopes to provide a thoracentesis tube that can monitor chest pressure in real time, so as to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: a thoracentesis tube capable of real-time monitoring of chest pressure, comprising a main body component, wherein the main body component comprises a chest drainage tube, a drug delivery hole, a drug delivery tube, a three-way connector, a drug delivery interface, a chest pressure detection interface, a detection device, a shunt tube, a first threading tube, a sealing plug, a wire, a blood oxygen detection patch and an anti-blocking hole;

[0006] A drug delivery hole is provided at the lower part of the outer wall of the chest drainage tube, and a drug delivery tube is installed on the inner wall of the drug delivery hole, one end of the drug delivery tube away from the drug delivery hole passes through the interior of the chest drainage tube, a shunt tube is provided on the top of the chest drainage tube, one side of the middle part of the outer wall of the shunt tube is connected with a first threading tube, one end of the drug delivery tube away from the drug delivery hole passes through the interior of the first threading tube, one end of the drug delivery tube away from the drug delivery hole is connected with a three-way joint, a drug delivery interface is provided at the bottom of the three-way joint, a chest pressure detection interface is provided at the bottom of one side of the three-way joint, the inner wall of the chest pressure detection interface is connected with a detection device through the chest pressure detection tube, the input end of the detection device is electrically connected to a blood oxygen detection patch through a wire, a sealing plug is provided on the outer wall of the drug delivery interface, and an anti-blocking hole is provided on the side of the lower part of the outer wall of the chest drainage tube close to the drug delivery hole.

[0007] As a further preferred embodiment of the present technical solution, an inflatable air bag is provided on the upper part of the outer wall of the chest drainage tube near the drug delivery hole, an inflation hole is opened in the middle part of the inner wall of the outer wall of the chest drainage tube near the inflatable air bag, an inflation tube is fixedly connected to the inner wall of the inflation hole, one end of the inflation tube away from the inflation hole passes through the interior of the chest drainage tube, and a second threading tube is connected to the other side of the middle part of the outer wall of the shunt tube, and one end of the inflation tube away from the inflation hole passes through the interior of the second threading tube.

[0008] As a further preferred embodiment of the present technical solution, the outer wall of the chest drainage tube is slidably connected with a movable ring near the upper part of the inflatable airbag, and the upper surface of the movable ring is provided with a plurality of arc-shaped clamping plates near the outside of the chest drainage tube, and the outer walls of the plurality of arc-shaped clamping plates are threadedly connected with limiting nuts.

[0009] As a further preferred embodiment of the technical solution, a plurality of insertion holes are provided on the outer side wall of the movable ring, and an insertion rod is slidably connected to the inner side wall of any one of the plurality of insertion holes.

[0010] As a further preferred embodiment of the present technical solution, the outer wall of the chest drainage tube is slidably connected to a protective pad near the lower portion of the movable ring, and the upper surface of the protective pad is fittedly connected to the lower surface of the movable ring.

[0011] As a further preferred embodiment of the present technical solution, the inner walls of the plurality of arc-shaped clamping plates are provided with arc-shaped anti-slip pads, and the inner walls of the plurality of arc-shaped anti-slip pads are fit-connected to the outer wall of the chest drainage tube near the upper part of the movable ring.

[0012] As a further preferred embodiment of the present technical solution, the top and bottom of the inflatable airbag are both provided with conical rings, and the inner walls of the two conical rings are fixedly connected to the outer walls of the chest drainage tube close to the upper and lower parts of the inflatable airbag.

[0013] As a further preferred embodiment of the present technical solution, a handle is fixedly connected to one end of the outer wall of the insertion rod away from the insertion hole.

[0014] In order to solve the above technical problems, another technical solution adopted by the present application is: a method for using a thoracentesis tube capable of real-time monitoring of chest pressure, comprising the following steps:

[0015] Step 1: Align the bottom of the chest drainage tube with the puncture opening and insert it into the chest cavity, so that the inflatable airbag is located at a predetermined position in the chest cavity, and the drug delivery hole and the anti-blocking hole are both in the chest cavity;

[0016] Step 2: Inflate the inflatable airbag through the inflatable tube to expand the inflatable airbag, slide the movable ring and the protective pad downward to make the protective pad fit against the outer wall of the chest cavity, and then tighten the limit nut to make the arc-shaped anti-slip pad on the inner wall of the arc-shaped clamping piece fit closely against the chest drainage tube to fix the chest drainage tube;

[0017] Step 3: Connect the chest pressure detection interface on the three-way connector to the detection equipment to monitor the chest pressure;

[0018] Step 4: After the puncture tube is inserted into the chest cavity, the pressure sensor inside the detection device senses the change in the pressure in the chest cavity in real time through the drug delivery tube and generates an electrical signal. The processing center of the detection device receives the electrical signal and calculates the real-time pressure in the chest cavity according to the formula. The specific steps are as follows:

[0019] S102. Before use, calibrate the pressure sensor inside the testing equipment and record the pressure Ps td The corresponding sensor output electrical signal value Vs td , calibration coefficient k = P std / V std ;

[0020] S103: The pressure sensor inside the detection device monitors the intrathoracic pressure in real time and generates an electrical signal V real Transmitted to the processing center of the detection equipment, the processing center of the detection equipment according to the formula P real = k × V real Calculate the real-time intrathoracic pressure P real ;

[0021] Step 5: When it is necessary to administer the drug into the chest cavity, remove the sealing plug on the drug administration interface and connect it to the syringe, and the drug enters the chest cavity through the drug delivery tube.

[0022] As a further preferred embodiment of the present technical solution, the method further includes a method for calculating the rate of change of chest pressure;

[0023] The calculation process of the thoracic pressure change rate is as follows:

[0024] The calculation formula of pressure change rate ΔP / Δt is:

[0025] ΔP / Δt=(P i -P i -1) / Δt;

[0026] Among them, P i is the pressure value recorded at the current moment, P i-1 is the pressure value recorded at the previous moment, and Δt is the time interval.

[0027] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0028] 1. The present invention integrates a drug delivery tube, a chest pressure detection interface, and a drug delivery interface on the chest drainage tube, so that medical staff can monitor the intrathoracic pressure and blood oxygen concentration in real time while performing closed chest drainage treatment, and directly deliver precise drugs to the chest through the drug delivery interface when necessary, without the need for additional operations and equipment, thereby greatly improving the convenience and efficiency of clinical treatment, reducing the pain and infection risk of patients, and facilitating the rapid recovery of patients;

[0029] 2. The present invention uses detection equipment to sense changes in intrathoracic pressure and blood oxygen concentration in real time, thereby achieving continuous and dynamic monitoring of intrathoracic pressure and blood oxygen concentration throughout the entire drainage process, providing medical staff with instant and accurate pressure data, which helps them to promptly detect abnormal changes in intrathoracic pressure.

[0030] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a structural diagram of a perspective of the present invention;

[0033] Figure 2 Another perspective structural diagram of the present invention;

[0034] Figure 3 It is a structural diagram of the drug delivery tube and the three-way connector of the present invention;

[0035] Figure 4 It is a structural diagram of the chest drainage tube and the inflation tube of the present invention;

[0036] Figure 5 It is a structural diagram of the movable ring and the limiting nut of the present invention;

[0037] Figure 6 This is a structural diagram of the arc-shaped clamping sheet and the arc-shaped anti-skid pad of the present invention;

[0038] Figure 7 For the present invention Figure 3 A magnified image of area A;

[0039] Figure 8 The present invention is a flowchart of a method for using a thoracentesis tube capable of monitoring chest pressure in real time.

[0040] Figure numerals: 1. Main component; 11. Chest drainage tube; 12. Drug delivery hole; 13. Drug delivery tube; 14. Three-way connector; 15. Drug delivery interface; 16. Chest pressure detection interface; 17. Detection equipment; 18. Shunt tube; 19. First threading tube; 20. Anti-blocking hole; 21. Inflatable airbag; 22. Inflating hole; 23. Inflating tube; 24. Second threading tube; 25. Movable ring; 26. Arc-shaped clamping plate; 27. Limit nut; 28. Socket; 29. ​​Insert rod; 30. Protective pad; 31. Arc-shaped anti-slip pad; 32. Conical ring; 33. Handle; 34. Sealing plug; 35. Wire; 36. Blood oxygen detection patch; 37. Chest pressure detection tube. DETAILED DESCRIPTION

[0041] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0042] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides a thoracentesis tube capable of real-time monitoring of thoracic pressure, comprising a main body component 1, wherein the main body component 1 comprises a thoracic drainage tube 11, a drug delivery hole 12, a drug delivery tube 13, a three-way connector 14, a drug delivery interface 15, a thoracic pressure detection interface 16, a detection device 17, a shunt tube 18, a first threading tube 19, a sealing plug 34, a wire 35, a blood oxygen detection patch 36 and an anti-blocking hole 20;

[0044] A drug delivery hole 12 is provided at the lower part of the outer wall of the chest drainage tube 11, and a drug delivery tube 13 is installed on the inner wall of the drug delivery hole 12. The end of the drug delivery tube 13 away from the drug delivery hole 12 passes through the interior of the chest drainage tube 11. A shunt tube 18 is provided on the top of the chest drainage tube 11. A first threading tube 19 is connected to one side of the middle part of the outer wall of the shunt tube 18. The end of the drug delivery tube 13 away from the drug delivery hole 12 passes through the interior of the first threading tube 19. The end of the drug delivery tube 13 away from the drug delivery hole 12 is connected to a three-way joint 14. A drug delivery interface 15 is provided at the bottom of the three-way joint 14. One end of the three-way joint 14 is connected to the first threading tube 19. A chest pressure detection interface 16 is provided at the bottom of the side, the inner wall of the chest pressure detection interface 16 is connected to a detection device 17 through a chest pressure detection tube 37, the input end of the detection device 17 is electrically connected to a blood oxygen detection patch 36 through a wire 35, a sealing plug 34 is sleeved on the outer wall of the drug delivery interface 15, and an anti-blocking hole 20 is opened on the lower part of the outer wall of the chest drainage tube 11 near the drug delivery hole 12; wherein the chest drainage tube 11 is used as the main channel for guiding the gas or liquid in the chest cavity to be discharged from the body, and the setting of the drug delivery hole 12 provides a position for installing the drug delivery tube 13, so that the drug delivery tube 13 can be used to Directly monitor the intrathoracic pressure and drug administration operation. The detection device 17 is connected to the drug delivery tube 13 to monitor the intrathoracic pressure in real time, and transmits the electrical signal to the data processing center inside the detection device 17 for calculation and processing. The detection device 17 is also electrically connected to the blood oxygen detection patch 36 through the wire 35 to monitor the changes in the patient's blood oxygen concentration. After the chest pressure detection is completed, the detection device 17 can be removed from the chest pressure detection interface 16 on the three-way connector 14, and the chest pressure detection interface 16 can be blocked with a matching plug to prevent the chest pressure detection interface 16 from being contaminated, and the detection device 17 can be The monitoring data is transmitted to the data management center of the hospital through the wireless transmission function; the drug administration interface 15 and the drug delivery tube 13 on the three-way connector 14 constitute a drug administration system, allowing the drug to be directly injected into the chest cavity, and the shunt tube 18 serves to lead out the drug delivery tube 13. The first threading tube 19 provides them with a passage path inside the chest drainage tube 11, ensuring the compactness of the structure. The presence of the anti-blocking hole 20 helps to prevent blockage during the drainage process and ensure the continuous drainage. For ease of wearing, a strap can be set on the back of the detection device 17, and the detection device 17 is tied to the patient's torso through the strap.

[0045] In one embodiment, specifically: an inflatable airbag 21 is provided on the upper part of the outer wall of the chest drainage tube 11 near the drug delivery hole 12, an inflatable hole 22 is opened in the middle of the inner wall of the outer wall of the chest drainage tube 11 near the inflatable airbag 21, an inflatable tube 23 is fixedly connected to the inner wall of the inflatable hole 22, and one end of the inflatable tube 23 away from the inflatable hole 22 passes through the interior of the chest drainage tube 11, and a second threading tube 24 is connected to the other side of the middle part of the outer wall of the shunt tube 18, and the inflatable tube 23 away from the inflatable hole 22 is connected to the inner wall of the inflatable hole 22. One end of the puncture tube 21 passes through the interior of the second threading tube 24, wherein the inflatable airbag 21 on the outer wall of the chest drainage tube 11 near the upper part of the drug delivery hole 12 plays an important role in use, and the inflation hole 22 is connected to the inflation tube 23, and the inflation tube 23 passes through the interior of the chest drainage tube 11 and is led out through the second threading tube 24, which is convenient for connection with an external inflation device; when the inflatable airbag 21 is inflated, it will expand and fit the chest wall, providing a stable support and fixing point to prevent the puncture tube from excessively moving in the chest cavity.

[0046] In one embodiment, specifically: the outer wall of the chest drainage tube 11 is slidably connected with a movable ring 25 near the upper part of the inflatable airbag 21, and a plurality of arc-shaped clamping pieces 26 are arranged on the upper surface of the movable ring 25 near the outer side of the chest drainage tube 11, and the outer walls of the plurality of arc-shaped clamping pieces 26 are threadedly connected with a limiting nut 27, wherein the movable ring 25 slidably connected to the outer wall of the chest drainage tube 11 near the upper part of the inflatable airbag 21 can be moved up and down to adjust the position, and the plurality of arc-shaped clamping pieces 26 on the movable ring 25 are threadedly connected to the limiting nut 27 on the outer wall, and when the limiting nut 27 is tightened, the arc-shaped clamping piece 26 will be tightened inwardly, and the arc-shaped anti-slip pad 31 on the inner wall of the arc-shaped clamping piece 26 is tightly fitted with the outer wall of the chest drainage tube 11, thereby increasing the friction force, thereby firmly fixing the chest drainage tube 11 from the outside to prevent it from accidentally shifting during use.

[0047] In one embodiment, specifically: a plurality of holes 28 are provided on the outer wall of the movable ring 25, and an insertion rod 29 is slidably connected to the inner wall of any one of the plurality of holes 28. The holes 28 on the outer wall of the movable ring 25 and the insertion rod 29 matched therewith are inserted into the insertion rod 29 after the movable ring 25 is adjusted to a desired position. When tightening the limit nut 27, the handle 33 on the insertion rod 29 can be held to prevent the movable ring 25 from rotating, thereby facilitating quick tightening of the limit nut 27.

[0048] In one embodiment, specifically: the outer wall of the chest drainage tube 11 is slidably connected to the lower part of the movable ring 25 with a protective pad 30, and the upper surface of the protective pad 30 is fitted and connected to the lower surface of the movable ring 25. The protective pad 30 on the outer wall of the chest drainage tube 11 is slidably connected to the lower part of the movable ring 25. Its main function is to protect the patient's skin. When the chest drainage tube 11 is fixed by structures such as the movable ring 25 and the arc-shaped clamping piece 26, the protective pad 30 can buffer the pressure of the movable ring 25 on the patient's skin, avoid skin damage caused by long-term compression, and improve the patient's comfort during the use of the puncture tube.

[0049] In one embodiment, specifically: the inner walls of the multiple arc-shaped clamping pieces 26 are all provided with arc-shaped anti-skid pads 31, and the inner walls of the multiple arc-shaped anti-skid pads 31 are fitted and connected to the outer wall of the chest drainage tube 11 near the upper part of the movable ring 25, and the arc-shaped anti-skid pads 31 on the multiple arc-shaped clamping pieces 26 increase the friction force between the contact with the chest drainage tube 11, thereby preventing the movable ring 25 from moving and shifting when the limit nut 27 is locked.

[0050] In one embodiment, specifically: conical rings 32 are provided at the top and bottom of the inflatable airbag 21, and the inner walls of the two conical rings 32 are fixedly connected to the outer walls of the chest drainage tube 11 close to the upper and lower parts of the inflatable airbag 21, wherein the conical rings 32 at the top and bottom of the inflatable airbag 21 facilitate the insertion and removal operations of the inflatable airbag 21, reducing the patient's pain.

[0051] In one embodiment, specifically: a handle 33 is fixedly connected to one end of the outer wall of the insertion rod 29 away from the insertion hole 28, and the handle 33 on the insertion rod 29 facilitates the operation of holding the insertion rod 29 to lock the limit nut 27.

[0052] like Figure 8 As shown, an embodiment of the present invention provides a method for using a thoracentesis tube capable of monitoring chest pressure in real time, comprising the following steps:

[0053] Step 1: Align the bottom of the chest drainage tube 11 with the punctured opening and insert it into the chest cavity, so that the inflatable airbag 21 is located at the predetermined position in the chest cavity, and the drug delivery hole 12 and the anti-blocking hole 20 are both in the chest cavity; this step is the key operation to correctly insert the chest drainage tube 11 into the chest cavity. Carefully align the bottom of the chest drainage tube 11 with the pre-punctured opening, and then slowly push it into the chest cavity. During the insertion process, it is necessary to ensure that the inflatable airbag 21 can accurately reach the predetermined position in the chest cavity, and at the same time, the drug delivery hole 12 and the anti-blocking hole 20 are also in appropriate positions in the chest cavity, so as to ensure the normal performance of subsequent functions. For example, the correct position of the drug delivery hole 12 can accurately monitor the pressure in the chest cavity or administer drugs to the chest cavity, so that the injected drug is effectively distributed in the chest cavity.

[0054] Step 2, inflate the inflatable airbag 21 through the inflation tube 23 to expand the inflatable airbag 21, slide the movable ring 25 and the protective pad 30 downward, so that the protective pad 30 fits against the outer wall of the chest cavity, and then tighten the limiting nut 27 to make the arc-shaped anti-skid pad 31 of the inner wall of the arc-shaped clamping piece 26 fit closely against the chest drainage tube 11, so as to fix the chest drainage tube 11; first, inflate the inflatable airbag 21 through the inflation tube 23 to expand the inflatable airbag 21, which will fit closely against the chest cavity wall and preliminarily fix the position of the puncture tube, and then slide the movable ring 25 and the protective pad 30 downward, so that the protective pad 30 fits against the outer wall of the chest cavity to protect the skin, and then tighten the limiting nut 27 to make the arc-shaped anti-skid pad 31 of the inner wall of the arc-shaped clamping piece 26 fit closely against the chest drainage tube 11, and further reinforce the puncture tube from the outside to prevent the puncture tube from shifting.

[0055] Step 3: Connect the chest pressure detection interface 16 on the three-way connector 14 to the detection device 17 to monitor the chest pressure; connect the chest pressure detection interface 16 on the three-way connector 14 to the detection device 17, so that the electrical signal generated by the change in the chest pressure sensed by the pressure sensor in the detection device 17 can be transmitted to the data processing center inside the detection device 17 for processing, and displayed on the display screen on the detection device 17; when administering the drug, connect the drug administration interface 15 on the three-way connector 14 to the syringe to prepare for the subsequent administration of the drug into the chest cavity.

[0056] Step 4: After the puncture tube is placed in the chest cavity, the pressure sensor inside the detection device 17 senses the change in the pressure in the chest cavity in real time through the drug delivery tube 13 and generates an electrical signal. The processing center of the detection device 17 receives the electrical signal and calculates the real-time pressure in the chest cavity according to the formula. The specific steps are as follows:

[0057] S101. Before use, calibrate the pressure sensor inside the detection device 17 and record the pressure P std The corresponding sensor output electrical signal value V std , calibration coefficient k = P std / V std ; Before use, the pressure sensor inside the detection device 17 is calibrated, which is the key to ensure the accuracy of pressure monitoring. The pressure sensor inside the detection device 17 is placed in a known standard pressure environment, and the sensor output electrical signal values ​​corresponding to different pressures are recorded to calculate the calibration coefficient;

[0058] S102: The pressure sensor inside the detection device 17 monitors the intrathoracic pressure in real time and generates an electrical signal V real Transmitted to the processing center of the detection device 17 for calculation and processing, according to the formula P real = k × V real Calculate the real-time intrathoracic pressure P realThe pressure sensor inside the detection device 17 monitors the intrathoracic pressure in real time and generates an electrical signal. The data processing center inside the detection device 17 calculates the real-time intrathoracic pressure using the electrical signal output by the sensor according to the formula obtained by the previous calibration, thereby providing accurate pressure data for medical staff to timely judge the physiological state of the patient's chest cavity.

[0059] Step 5. When it is necessary to administer medicine into the chest cavity, remove the sealing plug 34 on the drug administration interface 15, suck the prepared drug solution into the syringe and connect it to the drug administration interface 15, and the drug enters the chest cavity through the drug delivery tube 13; when clinical treatment requires administration of medicine into the chest cavity, the medical staff accurately sucks the prepared drug solution into the syringe, and then slowly pushes the syringe piston, and the drug enters the chest cavity through the drug delivery tube 13 under pressure; slowly pushing the piston can control the drug administration speed, avoid too fast drug injection causing discomfort or other adverse reactions to the patient, and at the same time ensure that the drug can smoothly enter the chest cavity and be evenly distributed, thereby improving the treatment effect.

[0060] In one embodiment, specifically: the method further includes a method for calculating the rate of change of chest pressure;

[0061] The calculation process of the rate of change of thoracic pressure is as follows:

[0062] The calculation formula of pressure change rate ΔP / Δt is:

[0063] ΔP / Δt=(P i -P i-1 ) / Δt;

[0064] Among them, P i is the pressure value recorded at the current moment, P i-1 is the pressure value recorded at the previous moment, Δt is the time interval;

[0065] Specifically, the external pressure monitoring device is set to automatically record the intrathoracic pressure value P measured by the pressure sensor every Δt=10 seconds. i This fixed time interval can ensure that data is obtained frequently enough to reflect the pressure change trend, while not increasing the equipment burden and data processing difficulty due to too intensive data collection; the recorded pressure value P i Form a pressure data sequence that changes with time for subsequent pressure change rate calculation and analysis;

[0066] For example, the pressure value P3 recorded at the 30th second is 10 mmHg, and the pressure value P2 recorded at the 20th second is 8 mmHg, then the pressure change rate AP / Δt=(10-8) / 10=0.2 mmHg / s;

[0067] Under normal circumstances, the intrathoracic pressure changes relatively slowly and steadily, and the pressure change rate is at a low level. When the pressure change rate continues to increase and exceeds the preset threshold (such as 0.5 mmHg / s), it may indicate the following changes in the condition:

[0068] Intrathoracic hemorrhage: Blood accumulates in the chest cavity, causing the pressure in the chest cavity to rise rapidly and the pressure change rate to increase. At this time, the patient may experience symptoms such as increased chest pain, pale complexion, and increased heart rate;

[0069] Pneumothorax worsens: Gas continues to enter the chest cavity, causing the pressure in the chest cavity to rise rapidly, and the pressure change rate increases significantly; the patient may experience worsening dyspnea and increased respiratory rate;

[0070] If the pressure change rate continues to decrease and approaches zero, after excluding factors such as equipment failure, it can help determine that the condition is stabilizing, such as the drainage of gas or fluid in the chest cavity is effective and the pressure in the chest cavity gradually returns to the normal range.

[0071] This embodiment provides a method for using a thoracentesis tube capable of real-time monitoring of thoracic pressure, which also includes calculating the amplitude and frequency of thoracic pressure fluctuations:

[0072] The specific calculation method of the thoracic pressure fluctuation amplitude is as follows:

[0073] The external pressure monitoring device is set to continuously collect pressure data P(t) within a period of time T = 60 seconds. This period of time is sufficient to cover multiple respiratory cycles, so as to accurately reflect the fluctuation characteristics of the intrathoracic pressure during the patient's breathing process;

[0074] Pressure fluctuation amplitude A=P max -P min , where P max is the maximum pressure value within the 60-second period, P min is the minimum pressure value;

[0075] For example, in the 60 seconds of pressure data collected, the maximum pressure value P max =12mmHg, minimum pressure value P min =6mmHg, then the pressure fluctuation amplitude A = 12-6 = 6mmHg;

[0076] The specific calculation method of chest pressure fluctuation frequency is as follows:

[0077] The collected 60-second pressure data P(t) is processed by the fast Fourier transform (FFT) algorithm. The FFT algorithm converts the pressure data in the time domain into spectrum information in the frequency domain, so that the frequency components of the pressure fluctuation can be determined;

[0078] In the frequency domain, the frequency corresponding to the main frequency peak is the pressure fluctuation frequency f; usually, during normal breathing, the intrathoracic pressure fluctuation frequency is related to the respiratory frequency. The respiratory frequency of an adult during calm breathing is generally 12-20 times / minute, and the corresponding pressure fluctuation frequency is about 0.2-0.33Hz.

[0079] By accurately calculating and analyzing the rate of change, fluctuation amplitude and frequency of chest pressure, medical staff can be provided with more comprehensive and accurate information on the patient's intrathoracic physiological state, which helps to promptly detect changes in the disease and formulate reasonable treatment plans. In actual clinical applications, these parameters can also be combined with the patient's other clinical manifestations, examination results, etc. for comprehensive judgment to improve the accuracy of diagnosis and the effectiveness of treatment.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A thoracentesis tube capable of real-time monitoring of chest pressure, characterized in that: The invention comprises a main body component (1), wherein the main body component (1) comprises a chest drainage tube (11), a drug delivery hole (12), a drug delivery tube (13), a three-way joint (14), a drug delivery interface (15), a chest pressure detection interface (16), a detection device (17), a shunt tube (18), a first threading tube (19), a sealing plug (34), a wire (35), a blood oxygen detection patch (36) and an anti-blocking hole (20); A drug delivery hole (12) is provided at the lower part of the outer wall of the chest drainage tube (11), a drug delivery tube (13) is installed on the inner wall of the drug delivery hole (12), one end of the drug delivery tube (13) away from the drug delivery hole (12) passes through the interior of the chest drainage tube (11), a shunt tube (18) is provided on the top of the chest drainage tube (11), one side of the middle part of the outer wall of the shunt tube (18) is connected to a first threading tube (19), one end of the drug delivery tube (13) away from the drug delivery hole (12) passes through the interior of the first threading tube (19), and one end of the drug delivery tube (13) away from the drug delivery hole (12) is connected to the first threading tube (19). A three-way connector (14) is provided, a drug delivery interface (15) is provided at the bottom of the three-way connector (14), a chest pressure detection interface (16) is provided at the bottom of one side of the three-way connector (14), the inner wall of the chest pressure detection interface (16) is connected to a detection device (17) through a chest pressure detection tube (37), the input end of the detection device (17) is electrically connected to a blood oxygen detection patch (36) through a wire (35), the outer wall of the drug delivery interface (15) is provided with a sealing plug (34), and an anti-blocking hole (20) is provided on the lower part of the outer wall of the chest drainage tube (11) near the drug delivery hole (12).

2. A thoracentesis tube capable of real-time monitoring of chest pressure according to claim 1, characterized in that: An inflatable air bag (21) is arranged on the upper part of the outer wall of the chest drainage tube (11) near the medicine delivery hole (12); an inflatable hole (22) is opened in the middle part of the inner wall of the outer wall of the chest drainage tube (11) near the inflatable air bag (21); an inflatable tube (23) is fixedly connected to the inner wall of the inflatable hole (22); one end of the inflatable tube (23) away from the inflatable hole (22) passes through the interior of the chest drainage tube (11); the other side of the middle part of the outer wall of the shunt tube (18) is connected to a second threading tube (24); one end of the inflatable tube (23) away from the inflatable hole (22) passes through the interior of the second threading tube (24).

3. A thoracentesis tube capable of real-time monitoring of chest pressure according to claim 2, characterized in that: The outer wall of the chest drainage tube (11) is slidably connected to a movable ring (25) near the upper part of the inflatable airbag (21), and the upper surface of the movable ring (25) is provided with a plurality of arc-shaped clamping plates (26) near the outer side of the chest drainage tube (11), and the outer walls of the plurality of arc-shaped clamping plates (26) are threadedly connected to limit nuts (27).

4. A thoracentesis tube capable of real-time monitoring of chest pressure according to claim 3, characterized in that: The outer side wall of the movable ring (25) is provided with a plurality of insertion holes (28), and the inner side wall of any one of the plurality of insertion holes (28) is slidably connected with an insertion rod (29).

5. A thoracentesis tube capable of real-time monitoring of chest pressure according to claim 3, characterized in that: The outer wall of the chest drainage tube (11) is slidably connected to a protective pad (30) near the lower part of the movable ring (25), and the upper surface of the protective pad (30) is closely connected to the lower surface of the movable ring (25).

6. A thoracentesis tube capable of real-time monitoring of chest pressure according to claim 3, characterized in that: The inner side walls of the plurality of arc-shaped clamping pieces (26) are all provided with arc-shaped anti-skid pads (31), and the inner side walls of the plurality of arc-shaped anti-skid pads (31) are closely connected to the outer side wall of the chest drainage tube (11) near the upper part of the movable ring (25).

7. A thoracentesis tube capable of real-time monitoring of chest pressure according to claim 2, characterized in that: The top and bottom of the inflatable airbag (21) are both provided with conical rings (32), and the inner side walls of the two conical rings (32) are fixedly connected to the outer side walls of the chest drainage tube (11) close to the upper and lower parts of the inflatable airbag (21).

8. A thoracentesis tube capable of real-time monitoring of chest pressure according to claim 4, characterized in that: A handle (33) is fixedly connected to one end of the outer wall of the insertion rod (29) away from the insertion hole (28).

9. A method for using a thoracentesis tube capable of real-time monitoring of chest pressure, applied to a thoracentesis tube capable of real-time monitoring of chest pressure as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Align the bottom of the chest drainage tube (11) with the puncture opening and insert it into the chest cavity, so that the inflatable airbag (21) is located at a predetermined position in the chest cavity, and the drug delivery hole (12) and the anti-blocking hole (20) are both in the chest cavity; Step 2: Inflate the inflatable airbag (21) through the inflatable tube (23) to expand the inflatable airbag (21), slide the movable ring (25) and the protective pad (30) downward to make the protective pad (30) fit against the outer wall of the chest cavity, and then tighten the limit nut (27) to make the arc-shaped anti-skid pad (31) on the inner wall of the arc-shaped clamping piece (26) fit closely against the chest drainage tube (11), thereby fixing the chest drainage tube (11); Step 3: Connect the chest pressure detection interface (16) on the three-way connector (14) to the detection device (17) to monitor the chest pressure; Step 4: After the puncture tube is placed in the chest cavity, the pressure sensor inside the detection device (17) senses the change in the pressure in the chest cavity in real time through the drug delivery tube (13) and generates an electrical signal. The processing center of the detection device (17) receives the electrical signal and calculates the real-time pressure in the chest cavity according to the formula. The specific steps are as follows: S101. Before use, calibrate the pressure sensor inside the detection device (17) and record the pressure P std The corresponding sensor output electrical signal value V std , calibration coefficient k = P std / V std ; S102: The pressure sensor inside the detection device (17) monitors the intrathoracic pressure in real time and generates an electrical signal V real Transmitted to the processing center of the detection device (17), the processing center of the detection device (17) according to the formula P real = k × V real Calculate the real-time intrathoracic pressure P real ; Step 5: When it is necessary to administer the drug into the chest cavity, remove the sealing plug (34) on the drug administration interface (15) and connect it to a syringe, and the drug enters the chest cavity through the drug delivery tube (13).

10. A method for using a thoracentesis tube capable of real-time monitoring of chest pressure, characterized in that: The method also includes a method for calculating the rate of change of thoracic pressure; The calculation process of the thoracic pressure change rate is as follows: The calculation formula of pressure change rate ΔP / Δt is: ΔP / Δt=(P i -P i-1 ) / Δt; Among them, P i is the pressure value recorded at the current moment, P i-1 is the pressure value recorded at the previous moment, and Δt is the time interval.

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